First Look: Danny's Past Resurfaces On Blue Bloods

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Donnie Wahlberg as Danny Reagan

In "Backstabbers," Danny gets involved in the hunt for two escaped convicts after learning that one is his former collar, who Danny believes was only acting in self-defense. Also, Nicky uses her NYPD ties to help her friend and Gormley criticizes a plan from Trey Delgado, an NYPD sergeant (Esai Morales) whom Gormley believes is having an affair with his wife.